Telegraphy.



M. 0. ANTHONY.

TELEGRAPHY.

LAPPLIOATION II'ILIED JUNE 8/1909. v 1,046,714. Patented Dec. 10, 1912 R b a UNITED STATES PATENT OFFICE.

MARCUS 0. ANTHONY, OF ENGLEWOQIS, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN MENTS, 0F ONE-HALF TO CHARLES H. WALKER AND ONE-HALF T0 DAVID I. G AB- RETSO'N, BOTH OF NEW YORK, N. Y.

To all whom it may concern:

Be it known that I, MARcUs O. ANTHONY, a citizen of the United States of America, residing at Englewood, county of Bergen, State of New Jersey, have invented certain new and useful Improvements in Telegraphy, of which the following is a specification.

Myv invention relates generally to telegraphy. and comprises an, improved apparatus for making, conducting and receiving telegraphic signals.

The best form of apparatus embodying my invention at present known to me for making, conducting and receiving ordinary Morse signals, is illustrated in the accompanying drawing inwhich the induction coils are shown in longitudinal sectionand the other parts in diagram.

Generally speaking, my invention comprises a sending, or signal generating apparatus A, of peculiar construction, a signal receiving apparatus B, certain of whose features of construction are duplicates of the corresponding portions of the sending apparatus, and a system of connect-ions for the two by line conductor '0, with branches such as D if desired. By this apparatus electrical impulses or influences are generated at the sending end, transmitted over a conductor, which need not be insulated, and over which other ordinary currents may pass at.

the same time without interference, and re.- ceived and indicated at the receiving endby an ordinary telegraph sounder or other signaling device, and all with the consumption of a comparatively'small amount of electrical energy. v

In the drawing, 1 represents the spool (made of ordinary-insulating material, like gutta percha) of adouble wound induction coil having the's'oft iron core 2, the inner winding 3, and the outer winding 4, The inner winding. is of-coarse insulated wire (say No. 18), and I usually employ two to four layers of it. The outer winding is of finer insulated'wire (say No. 36) and I employ many layers of-itl say- 150). Of course 7 these sizes and windings may be varied to produce efiects'of different degree. In order} v 4 Bra wu st" each,.as?the:='inn nele1 to increase the efiicienoy of the coil-for given lengths of wire, -I -'-'group' the outer- Winding in two portions or collections of coils, a: and 3/, connected ingseri es.as-:by,'wi

TELEGRAPHY. I

smuggle 0': Letters Patent. Patented Dec'.10,1912. Application filed Jane 8, 1909. Serial No. 500,838. I

separated from one another and from the ends of the innerwinding by approximately equal spaces. Preferably, the inner winding 3 and the outer'winding 4 areso arranged and connected that a current from the same source of supply passing through them would travel in opposite directions around the core 2. To-secure this, the windings 3 I and 4, as arranged in the diagram, are wound in relativelycopposite directions. I believetlie apparatus works more effectively when the coils are wound in this manner, though this particular mode of winding is not essential to its operativeness.

6 is a battery or other source of electric current and 7 an ordinary telegraph key, both in the circuit 5 with the inner winding 3. Means for generating a rapidly and automatically interrupted current of electric ity are provided by the vibrating armature 11, located in the field of force of the core 2 of the induction coil, cooperating with the adjustable contact screw 10 mounted in 'tka metallic bracket 9. The armature 111s spring mounted on the metallic bracket 12.

The brackets 9 and 12 serve as terminals for the circuit 5 and around the gap so formed,-

is the shunt circuit 13 in which is the'condenser 14. I

One terminal, as 15, of the;outerwinding. 4 is connected to any convenient pqrtlon of the circult 5 of the inner winding 3,fof the induction coil of the sending instrument at A, and the other terminal 16, is co'nnectedto the line conductor C. At 'tlie-receiving' stm tion B is a second and similar doublewound induction coil-having the spool 21, soft iron core 22; inner winding23 of c n net 26-, ha oft lIOII-I COI' QI' 'Q'Z. R Two "ands aveone' element of 'connected to one wi1es30 and 31.

e1..l;aeyd en'jiirs are preferably-placed with ue, and

in a few. inches of each other, m1 have their. other elements, as the outer one, suite ably connected as by Wire 45. .One' terminal ofthe outer winding of this, second coilis' connected to the circuit of the inner winding, as by wire 35., and the other is connected to line C, as by wire 36. The'free ends of th'e'outer windings of thetwo coils at the, sending: and receiving stations are thus connected to theline'conductor extend- I ,ing, between the sending and r eceiving ins struments. g i

32 is any suitable form. of circuit breaker pivoted at 33 and normally heldby' spring '34 against the adjustable contact 38 'so 'as' to close the local circuit 3Twhi'ch includes the local battery 39, or other source of current, and the reversing relay apparatus 40'.

iThis' iitig-lflflztioperams a sounder 41, through circuit 43 including battery. 42. The circuit breaker 32 carries an armature. 44 located within; the field of forceof the magnet 26,

and, its core 2.7,. a I Such being; the construction ferred form'of apparatus the mode of operation of my invention is as follows: The key "being largely absorbed by condenser 14.

The electrical or inductive phenomena thus created in the sending cbil transmit their infiuence -overtl 1'e line conductor C to "the c011 at the receiving station B, and create a' responsive magnetic'or electrical action in the magnet 26 which causes it to attract the armature 44, overpower the spring'34,- and pull the circuit breaker 32 away from contact 38. This opens the local relay cir cuit' 37, and through the reversed relay. 40'

closes circuit 43' operating sounder 41. When the'key '7 is opened, the circuits 5 and 25 are deenergized,- and the sprin 34 closes circuit breaker 32, and circuit 3?, opening circuit 43 and releasing sounder 41.- .When

the key is opened and closed successively in a manner to form thecharacters of the Morse alphabet the same are repeatedon sounder 41, and 'a'ny desired message transmitted.

The Leyden jars 28 and 29 act to clear the v line and permit the Morse characters to be "sent over the line rapidly. Without them,

- shown so as to open the local circuit when the speed of transmission is greatly limited,

The circuit breaker 32 is arranged as magnet 26 is energized, because the pulsating current ,in circuit 5 produces similar vibrations in the armature 44, and if the apparatus were arranged to close the circuit 37 when key 7 is closed, an evenand complete closure of circuit 37 would not be Copies of this patent may be obtained for five cents each, by addressing the Commission :r of Ihtents, V

of the pre would be" affected, thereby.

'In practice one complete apparatus-in apparatus vBi By suitable selective mechanisms of ordina .c'onstruction,fanyone st-ation' canthenca l-up' and. talk to, "any other station.

' eludingportions}, and B is i usually in} T stalled at" each station? The line conductor- 0 is branched at -D$and the branch 1 D extends to as ma y, othei stations as desired, being branched at eachrsuchj station' -into a similar sgmding apparatus A: 'and' receiving 'Ofcour'se'various changes, ean'be' made in varied. Other means io'r generatinga co'nstantly varying current of elect icity atthe sending station. may be; substituted Ifor the 1' battery and vibratory circuit" breakerfshown.

the details of-construction and arrangement;

7 of myinvention-without departingf'rom the principle of operation, though such" changes -wou'ld modify-its efl'ectiveness. Otherforms of signal responsive apparatuslmight besubstituted for the circuit relaysfand' sounder; shown. The" windings" of the coils: may be But all, such I modificatioiiS flwould still 'bewithin the; broad scope;- of invention as- Iunderstandit.

.Theapparatushereiir described y i is vastlygmore'eflicient thanthat shown in" my prior Patent No; 783,604, d'ated' Febru Y ary'28, 1905. "The increase in'eificiency seems tolargely result from the connectionoff one terminal .of the outer windingof eachcoil to the" inner winding of'that coihi nstead of I leaving same disconnected or blocked off, as

described in my s'aid prior patent. Each of the other changes herein described and claimed also contributes its part to the improyed results now obtained.

Having, therefore, described my invention, 1

I-claim:+ v v 1. :In atelegraphic system the combination with means of generating a rapidly pulsating current, of .an-electromagnet whose coils are incircuit with-said means, a local relay circuit, a-normally closed circuit breaker in said relay circuit, and means whereby said circuit is opened when the electromagnet is energized.

2. In a telegraphic system the combination with means of generating a rapidly pulsatmg current, of an electromagnet whosecoils are'in circuit with said means, a a

local relay circuit, a normally closed circuit breaker. in said relay circuit, a reversing relay in said circuit, and a sounder circuit controlled bygsaid' reversing relay.

Washington, D. 0. 

